[llvm-dev] How to get the TypeIndex for the class/structure given its member function's TypeIndex in PdbAstBuilder?

[Zequan Wu via llvm-dev]

Hi,

I'm trying to call TypeSystemClang::AddMethodToCXXRecordType in
PdbAstBuilder::GetOrCreateFunctionDecl to create a function decl in the
case when the function is inside a record. It requires the record's type as
the first argument. So, I think I need to get its TypeIndex first. I tried
to do the following, but it fails to find the parent's TypeIndex.
type_id.index is the member function's TypeIndex.
auto iter = m_parent_types.find(type_id.index);

Am I using m_parent_types incorrectly? Or is there any other ways to get
the class/structure's TypeIndex?

Zequan
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